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The most watched report comes from Yahoo! (YHOO - Get Report) afterhours today with the stock below its 50-day simple moving average at $38.82 for the first time since July 8. Dow component AT&T (T - Get Report) also reports after hours today with the stock near a 52-week low at $33.09.

Boeing (BA - Get Report) will be the focus premarket tomorrow with this stock the only Dow component that has a sell rating. Boeing set an all-time intra-day high at $144.57 on Wednesday then ended last week at $136.65 which is below the low of the prior week setting up what could be a key reversal given lower closes this week and next.

Amgen(AMGN) ($118.52): Analysts expect the company to earn $1.64 a share after hours today. Amgen represents the medical sector which is 37.8% overvalued with an underweight rating as 33.3% of the 762 stocks in the sector have sell or strong sell ratings according to www.ValuEngine.com. Amgen set an all-time intraday high at $124.46 on Wednesday then reversed direction ending last week above its 50-day simple moving average at $115.12 with the 200-day SMA at $109.55. The weekly chart is positive with the stock above its five-week modified moving average at $116.85 with rising stochastics and its 200-week SMA at $75.21. Amgen has a hold rating is 16% overvalued with a gain of 38.5% over the last 12 months. Monthly and semiannual value levels are $115.06 and $102.54 with a quarterly risky level at $125.26.

Boeing ($137.36): Analysts expect the company to earn $1.58 a share premarket tomorrow. Boeing represents the aerospace sector which is 33% overvalued with an underweight rating as 79.5% of the 73 stocks in the sector have sell or strong sell ratings. The stock ended Monday above its 50-day SMA at $136.62 with its 200-day SMA at $114.50. The weekly chart shifts to negative with a close this week below its five-week MMA at $136.61 with declining stochastics and its 200-week SMA at $80.23. Boeing has a sell rating is 28.3% overvalued with a gain of 85.6% over the last 12 months. My semiannual and quarterly value levels are $123.73, $117.06 and $120.52 with weekly and monthly risky levels at $140.39 and $145.41.

Cullen Frost Bank (CFR) ($73.54): Analysts expect the company to earn 97 cents a share on Wednesday. The regional bank is in the finance sector which is 21.3% overvalued with an equal-weight rating as 83% of the 2956 stocks in the sector have hold ratings. The stock traded to a 2014 high at $76.51 on Wednesday then declined to $73.18 on Monday above its 50-day and 200-day SMAs at $73.09 and $69.40. The weekly chart shifts to negative on a close this week below its five-week MMA at $73.44 with declining stochastics and its 200-week SMA at $58.61. Cullen Frost has a hold rating is 20.8% overvalued with a gain of 25.5% over the last 12 months. Annual value levels are $63.30 and $62.84 with semiannual and quarterly pivots at $70.62, $72.17 and $75.11 with a monthly risky at $80.93.

Cirrus Logic (CRUS) ($19.62): Analysts expect the company to earn 68 cents a share after hours today. Cirrus represents the computer and technology sector which is 35.4% overvalued with an overweight rating as 51.6% of the 1125 stocks in the sector have buy or strong buy ratings. The stock as been below its 200-day SMA at $20.49 since Nov. 11 and is below its 50-day SMA at $19.88. The weekly chart is negative with the stock below its five-week MMA and 200-week SMA at $20.02 and $21.22 with oversold stochastics. Cirrus has a buy rating is 11.5% overvalued with a loss of 32% over the last 12 months. My annual pivot is $18.84 with annual and monthly pivots at $20.72 and $21.47 and semiannual risky levels at $32.60 and $33.31.

Dow Chemical(DOW) ($43.10): Analysts expect the company to earn 43 cents a share premarket Wednesday. Dow Chemical represents the basic materials sector which is 11.7% overvalued with an underweight rating as 64.1% of the 387 stocks in the sector have sell or strong sell ratings. The stock traded to a 2014 high at $46.85 on Jan. 22 then declined to $42.54 on Monday above its 50-day and 200-day SMAs at $41.93 and $37.66. The weekly chart is neutral with the stock above five-week MMA and 200-week SMA at $42.48 and $32.62 with declining stochastics. Dow Chemical has a sell rating is 36.4% overvalued with a gain of 25.2% over the last 12 months. My semiannual value level is $40.69 with quarterly and monthly pivots at $42.05 and $42.71 and weekly and semiannual risky levels at $$46.59 and $48.45.